remove option merge by full dom data

Hi

I tested bootstrap-markdown with requireJS by below code

``` js
(function(root, factory){
    if (typeof define === 'function' && define.amd) {
        require(["jquery", "bootstrap-markdown"], factory);
    } else {
        factory(root.jQuery);
    }
})(this, function($){
    $("#content").markdown();
});
```
But found that console got a "Uncaught Range Error: Maximum call stack size exceeded", By tracking the code I found that when create editor option, it merged full dom data() object and make this issue caused. Please confirm.